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<a name="cairo-Script-Surfaces"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="cairo-Script-Surfaces.top_of_page"></a>Script Surfaces</span></h2>
<p>Script Surfaces — Rendering to replayable scripts</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="cairo-Script-Surfaces.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a class="link" href="cairo-cairo-device-t.html#cairo-device-t" title="cairo_device_t"><span class="returnvalue">cairo_device_t</span></a> *
</td>
<td class="function_name">
<a class="link" href="cairo-Script-Surfaces.html#cairo-script-create" title="cairo_script_create ()">cairo_script_create</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cairo-cairo-device-t.html#cairo-device-t" title="cairo_device_t"><span class="returnvalue">cairo_device_t</span></a> *
</td>
<td class="function_name">
<a class="link" href="cairo-Script-Surfaces.html#cairo-script-create-for-stream" title="cairo_script_create_for_stream ()">cairo_script_create_for_stream</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cairo-Error-handling.html#cairo-status-t" title="enum cairo_status_t"><span class="returnvalue">cairo_status_t</span></a>
</td>
<td class="function_name">
<a class="link" href="cairo-Script-Surfaces.html#cairo-script-from-recording-surface" title="cairo_script_from_recording_surface ()">cairo_script_from_recording_surface</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cairo-Script-Surfaces.html#cairo-script-mode-t" title="enum cairo_script_mode_t"><span class="returnvalue">cairo_script_mode_t</span></a>
</td>
<td class="function_name">
<a class="link" href="cairo-Script-Surfaces.html#cairo-script-get-mode" title="cairo_script_get_mode ()">cairo_script_get_mode</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cairo-Script-Surfaces.html#cairo-script-set-mode" title="cairo_script_set_mode ()">cairo_script_set_mode</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="returnvalue">cairo_surface_t</span></a> *
</td>
<td class="function_name">
<a class="link" href="cairo-Script-Surfaces.html#cairo-script-surface-create" title="cairo_script_surface_create ()">cairo_script_surface_create</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="returnvalue">cairo_surface_t</span></a> *
</td>
<td class="function_name">
<a class="link" href="cairo-Script-Surfaces.html#cairo-script-surface-create-for-target" title="cairo_script_surface_create_for_target ()">cairo_script_surface_create_for_target</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cairo-Script-Surfaces.html#cairo-script-write-comment" title="cairo_script_write_comment ()">cairo_script_write_comment</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="cairo-Script-Surfaces.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="cairo-Script-Surfaces.html#CAIRO-HAS-SCRIPT-SURFACE:CAPS" title="CAIRO_HAS_SCRIPT_SURFACE">CAIRO_HAS_SCRIPT_SURFACE</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="cairo-Script-Surfaces.html#cairo-script-mode-t" title="enum cairo_script_mode_t">cairo_script_mode_t</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="cairo-Script-Surfaces.description"></a><h2>Description</h2>
<p>The script surface provides the ability to render to a native
script that matches the cairo drawing model. The scripts can
be replayed using tools under the util/cairo-script directory,
or with cairo-perf-trace.</p>
</div>
<div class="refsect1">
<a name="cairo-Script-Surfaces.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="cairo-script-create"></a><h3>cairo_script_create ()</h3>
<pre class="programlisting"><a class="link" href="cairo-cairo-device-t.html#cairo-device-t" title="cairo_device_t"><span class="returnvalue">cairo_device_t</span></a> *
cairo_script_create (<em class="parameter"><code>const <span class="type">char</span> *filename</code></em>);</pre>
<p>Creates a output device for emitting the script, used when
creating the individual surfaces.</p>
<div class="refsect3">
<a name="cairo-script-create.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>filename</p></td>
<td class="parameter_description"><p>the name (path) of the file to write the script to</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="cairo-script-create.returns"></a><h4>Returns</h4>
<p> a pointer to the newly created device. The caller
owns the surface and should call <a class="link" href="cairo-cairo-device-t.html#cairo-device-destroy" title="cairo_device_destroy ()"><code class="function">cairo_device_destroy()</code></a> when done
with it.</p>
<p>This function always returns a valid pointer, but it will return a
pointer to a "nil" device if an error such as out of memory
occurs. You can use <a class="link" href="cairo-cairo-device-t.html#cairo-device-status" title="cairo_device_status ()"><code class="function">cairo_device_status()</code></a> to check for this.</p>
</div>
<p class="since">Since: 1.12</p>
</div>
<hr>
<div class="refsect2">
<a name="cairo-script-create-for-stream"></a><h3>cairo_script_create_for_stream ()</h3>
<pre class="programlisting"><a class="link" href="cairo-cairo-device-t.html#cairo-device-t" title="cairo_device_t"><span class="returnvalue">cairo_device_t</span></a> *
cairo_script_create_for_stream (<em class="parameter"><code><a class="link" href="cairo-PNG-Support.html#cairo-write-func-t" title="cairo_write_func_t ()"><span class="type">cairo_write_func_t</span></a> write_func</code></em>,
                                <em class="parameter"><code><span class="type">void</span> *closure</code></em>);</pre>
<p>Creates a output device for emitting the script, used when
creating the individual surfaces.</p>
<div class="refsect3">
<a name="cairo-script-create-for-stream.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>write_func</p></td>
<td class="parameter_description"><p>callback function passed the bytes written to the script</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>closure</p></td>
<td class="parameter_description"><p>user data to be passed to the callback</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="cairo-script-create-for-stream.returns"></a><h4>Returns</h4>
<p> a pointer to the newly created device. The caller
owns the surface and should call <a class="link" href="cairo-cairo-device-t.html#cairo-device-destroy" title="cairo_device_destroy ()"><code class="function">cairo_device_destroy()</code></a> when done
with it.</p>
<p>This function always returns a valid pointer, but it will return a
pointer to a "nil" device if an error such as out of memory
occurs. You can use <a class="link" href="cairo-cairo-device-t.html#cairo-device-status" title="cairo_device_status ()"><code class="function">cairo_device_status()</code></a> to check for this.</p>
</div>
<p class="since">Since: 1.12</p>
</div>
<hr>
<div class="refsect2">
<a name="cairo-script-from-recording-surface"></a><h3>cairo_script_from_recording_surface ()</h3>
<pre class="programlisting"><a class="link" href="cairo-Error-handling.html#cairo-status-t" title="enum cairo_status_t"><span class="returnvalue">cairo_status_t</span></a>
cairo_script_from_recording_surface (<em class="parameter"><code><a class="link" href="cairo-cairo-device-t.html#cairo-device-t" title="cairo_device_t"><span class="type">cairo_device_t</span></a> *script</code></em>,
                                     <em class="parameter"><code><a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="type">cairo_surface_t</span></a> *recording_surface</code></em>);</pre>
<p>Converts the record operations in <em class="parameter"><code>recording_surface</code></em>
 into a script.</p>
<div class="refsect3">
<a name="cairo-script-from-recording-surface.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>script</p></td>
<td class="parameter_description"><p>the script (output device)</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>recording_surface</p></td>
<td class="parameter_description"><p>the recording surface to replay</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="cairo-script-from-recording-surface.returns"></a><h4>Returns</h4>
<p> <a class="link" href="cairo-Error-handling.html#CAIRO-STATUS-SUCCESS:CAPS"><span class="type">CAIRO_STATUS_SUCCESS</span></a> on successful completion or an error code.</p>
</div>
<p class="since">Since: 1.12</p>
</div>
<hr>
<div class="refsect2">
<a name="cairo-script-get-mode"></a><h3>cairo_script_get_mode ()</h3>
<pre class="programlisting"><a class="link" href="cairo-Script-Surfaces.html#cairo-script-mode-t" title="enum cairo_script_mode_t"><span class="returnvalue">cairo_script_mode_t</span></a>
cairo_script_get_mode (<em class="parameter"><code><a class="link" href="cairo-cairo-device-t.html#cairo-device-t" title="cairo_device_t"><span class="type">cairo_device_t</span></a> *script</code></em>);</pre>
<p>Queries the script for its current output mode.</p>
<div class="refsect3">
<a name="cairo-script-get-mode.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>script</p></td>
<td class="parameter_description"><p>The script (output device) to query</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="cairo-script-get-mode.returns"></a><h4>Returns</h4>
<p> the current output mode of the script</p>
</div>
<p class="since">Since: 1.12</p>
</div>
<hr>
<div class="refsect2">
<a name="cairo-script-set-mode"></a><h3>cairo_script_set_mode ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cairo_script_set_mode (<em class="parameter"><code><a class="link" href="cairo-cairo-device-t.html#cairo-device-t" title="cairo_device_t"><span class="type">cairo_device_t</span></a> *script</code></em>,
                       <em class="parameter"><code><a class="link" href="cairo-Script-Surfaces.html#cairo-script-mode-t" title="enum cairo_script_mode_t"><span class="type">cairo_script_mode_t</span></a> mode</code></em>);</pre>
<p>Change the output mode of the script</p>
<div class="refsect3">
<a name="cairo-script-set-mode.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>script</p></td>
<td class="parameter_description"><p>The script (output device)</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>mode</p></td>
<td class="parameter_description"><p>the new mode</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: 1.12</p>
</div>
<hr>
<div class="refsect2">
<a name="cairo-script-surface-create"></a><h3>cairo_script_surface_create ()</h3>
<pre class="programlisting"><a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="returnvalue">cairo_surface_t</span></a> *
cairo_script_surface_create (<em class="parameter"><code><a class="link" href="cairo-cairo-device-t.html#cairo-device-t" title="cairo_device_t"><span class="type">cairo_device_t</span></a> *script</code></em>,
                             <em class="parameter"><code><a class="link" href="cairo-cairo-surface-t.html#cairo-content-t" title="enum cairo_content_t"><span class="type">cairo_content_t</span></a> content</code></em>,
                             <em class="parameter"><code><span class="type">double</span> width</code></em>,
                             <em class="parameter"><code><span class="type">double</span> height</code></em>);</pre>
<p>Create a new surface that will emit its rendering through <em class="parameter"><code>script</code></em>
</p>
<div class="refsect3">
<a name="cairo-script-surface-create.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>script</p></td>
<td class="parameter_description"><p>the script (output device)</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>content</p></td>
<td class="parameter_description"><p>the content of the surface</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>width</p></td>
<td class="parameter_description"><p>width in pixels</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>height</p></td>
<td class="parameter_description"><p>height in pixels</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="cairo-script-surface-create.returns"></a><h4>Returns</h4>
<p> a pointer to the newly created surface. The caller
owns the surface and should call <a class="link" href="cairo-cairo-surface-t.html#cairo-surface-destroy" title="cairo_surface_destroy ()"><code class="function">cairo_surface_destroy()</code></a> when done
with it.</p>
<p>This function always returns a valid pointer, but it will return a
pointer to a "nil" surface if an error such as out of memory
occurs. You can use <a class="link" href="cairo-cairo-surface-t.html#cairo-surface-status" title="cairo_surface_status ()"><code class="function">cairo_surface_status()</code></a> to check for this.</p>
</div>
<p class="since">Since: 1.12</p>
</div>
<hr>
<div class="refsect2">
<a name="cairo-script-surface-create-for-target"></a><h3>cairo_script_surface_create_for_target ()</h3>
<pre class="programlisting"><a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="returnvalue">cairo_surface_t</span></a> *
cairo_script_surface_create_for_target
                               (<em class="parameter"><code><a class="link" href="cairo-cairo-device-t.html#cairo-device-t" title="cairo_device_t"><span class="type">cairo_device_t</span></a> *script</code></em>,
                                <em class="parameter"><code><a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="type">cairo_surface_t</span></a> *target</code></em>);</pre>
<p>Create a pxoy surface that will render to <em class="parameter"><code>target</code></em>
 and record
the operations to <em class="parameter"><code>device</code></em>
.</p>
<div class="refsect3">
<a name="cairo-script-surface-create-for-target.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>script</p></td>
<td class="parameter_description"><p>the script (output device)</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>target</p></td>
<td class="parameter_description"><p>a target surface to wrap</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="cairo-script-surface-create-for-target.returns"></a><h4>Returns</h4>
<p> a pointer to the newly created surface. The caller
owns the surface and should call <a class="link" href="cairo-cairo-surface-t.html#cairo-surface-destroy" title="cairo_surface_destroy ()"><code class="function">cairo_surface_destroy()</code></a> when done
with it.</p>
<p>This function always returns a valid pointer, but it will return a
pointer to a "nil" surface if an error such as out of memory
occurs. You can use <a class="link" href="cairo-cairo-surface-t.html#cairo-surface-status" title="cairo_surface_status ()"><code class="function">cairo_surface_status()</code></a> to check for this.</p>
</div>
<p class="since">Since: 1.12</p>
</div>
<hr>
<div class="refsect2">
<a name="cairo-script-write-comment"></a><h3>cairo_script_write_comment ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cairo_script_write_comment (<em class="parameter"><code><a class="link" href="cairo-cairo-device-t.html#cairo-device-t" title="cairo_device_t"><span class="type">cairo_device_t</span></a> *script</code></em>,
                            <em class="parameter"><code>const <span class="type">char</span> *comment</code></em>,
                            <em class="parameter"><code><span class="type">int</span> len</code></em>);</pre>
<p>Emit a string verbatim into the script.</p>
<div class="refsect3">
<a name="cairo-script-write-comment.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>script</p></td>
<td class="parameter_description"><p>the script (output device)</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>comment</p></td>
<td class="parameter_description"><p>the string to emit</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>len</p></td>
<td class="parameter_description"><p>the length of the sting to write, or -1 to use <code class="function">strlen()</code></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: 1.12</p>
</div>
</div>
<div class="refsect1">
<a name="cairo-Script-Surfaces.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="CAIRO-HAS-SCRIPT-SURFACE:CAPS"></a><h3>CAIRO_HAS_SCRIPT_SURFACE</h3>
<pre class="programlisting">#define CAIRO_HAS_SCRIPT_SURFACE 1
</pre>
<p>Defined if the script surface backend is available.
The script surface backend is always built in since 1.12.</p>
<p class="since">Since: 1.12</p>
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<hr>
<div class="refsect2">
<a name="cairo-script-mode-t"></a><h3>enum cairo_script_mode_t</h3>
<p>A set of script output variants.</p>
<div class="refsect3">
<a name="cairo-script-mode-t.members"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="enum_member_name"><p><a name="CAIRO-SCRIPT-MODE-ASCII:CAPS"></a>CAIRO_SCRIPT_MODE_ASCII</p></td>
<td class="enum_member_description">
<p>the output will be in readable text (default). (Since 1.12)</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="CAIRO-SCRIPT-MODE-BINARY:CAPS"></a>CAIRO_SCRIPT_MODE_BINARY</p></td>
<td class="enum_member_description">
<p>the output will use byte codes. (Since 1.12)</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: 1.12</p>
</div>
</div>
<div class="refsect1">
<a name="cairo-Script-Surfaces.see-also"></a><h2>See Also</h2>
<p><a class="link" href="cairo-cairo-surface-t.html#cairo-surface-t" title="cairo_surface_t"><span class="type">cairo_surface_t</span></a></p>
</div>
</div>
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